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一、前言林业化学除草是近30年发展起来的先进除草技术,它具有工效高、效果好、成本低等优点,已成为营林生产中的重要技术措施。一些先进国家和地区,如北美、北欧、西欧、苏联、日本、新西兰等,在林业化学除草方面发展很快,水平较高。药剂方面已达到选择性强,杀草谱广,高效,低毒,使用安全方便,有的还可促进树木生长;药械方面发展了低容量定向喷雾器,注射器,涂抹器,大面积机动喷雾器和航空喷洒;使用技术及配方也日趋完善。上述技术的开发成
Foreword Forestry chemical weeding is an advanced weeding technology developed in recent 30 years. It has the advantages of high efficiency, good effect and low cost. It has become an important technical measure in the production of forest. Some advanced countries and regions, such as North America, North Europe, Western Europe, the Soviet Union, Japan and New Zealand, have witnessed rapid development and high levels of chemical weed control in forestry. Pharmacy has reached the selectivity of strong, broad spectrum to kill herbicide, high efficiency, low toxicity, safe and convenient use, and some can also promote the growth of trees; the development of low-capacity directional sprayer, syringe, applicator, large area motorized sprayer and aviation Spraying; the use of technology and formula is also maturing. The development of the technology into